Electric block system for railways.



G. H. SHAPFBR. ELEGTBIU BLOCK SYSTEM ron BAILWAYS.

APPLIGATION FILED APR. 1 1907.

Patented Mar. 9, 1909.

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IEFAflQElilT @FFIQE TEL'lEEUiLRIC lllLOK SYSTEM FOR RAILWAYS.

To all 'wlw'm it wmy can-cam: Be it known that l, (limnms H. Smuivmi,citizen 0f the Ullllfitl States. rz-sieling at Muskegml, in the vomit-ylulusliegml and State at Michigan, have hive 'iLBil iiew mill usefulhi'lprovmnenus in Eleni Block 53-5-- Lems for R allwaysl, of which the14;. owing is 'n.

' specifiualion. I

The objefit of l-his lln'amtimi is ill: c-amti'uct an electric. Nuulsystiem 0r milwnys in which =1 sectional trolley wire is employed so 11mWham two trains occupy the $3.1m. sew-Lion of trolley wire bothei'igineors of the ti'iiiim will be instantly nqti'fiad of the i'szcia.

and u 'iproswhing one mother, the elerrtriu s stem shown m fiUl l lines.Fig. '3 shows i; la outlinia of .1. bloc: house in dotted lines and thealectric stem of the black house and two locomotives being shown insolid lines.

Most of the acbiilents in milwny syatezns have occurred by allowing twobrains to occupy-ll block atbl'le same iHIILB, and ilmmuy instances theoperaior in ake block, house lisaovers his mistake filler it is too law,and he ha. 'i'n'g no means m his command by which he could inmonuuunivuiiun with elm m1- gineers mi trains :1- 0-0. "011 wasim-vitable,

Ry my system all lu immi,i"ifiis umry an electrical. equi menl in mclcli lml the eug'lilfifllrl of aux lam limuiuotiveli may get. intoimmediiliza t .lerplmuir W1!DlkiljlhlfllltlQj! will:

this same block.

mslmmo 3pscifieaticn of Lettem Extent. aypllnatiem 1314311 April 1, mm.mm. No. 355,735.

ua-mnge-ment is incle- Futvntwd March S, 1909 Elm limglilx of a block.'l'lw imlloy pule l is intended in (.-rigi\ gallw Lil-Hwy wire. The milsll vquivazlenl U llw lvnglli ul' i lull'ullQ" wim m blacks: are Mlwlrirlllj; vmmwlml, but ult: insulated litthe and u! tin liluvks. in m'ilmllmf. =1 inure sure system um}; l'ic luul.

Wlir-n unly one lnuomutiw is ncunp 'ing n blnulc at :l linm, the circuitwill lw hrulmi at the (ends (if the trolls wire and rails ul the block.Shnuld mother locunmtlva vine-r a blank uceupiml by another locomuliw.the (--l8l.-l.-llflfi.l catsuit wnulcl be instantly closed tlu'oughtlldsystems of both locumutives whiuh would 1mg the bells in-botlilemma-l tives, the engineers wauld then know that, danger was imminentand would stop their brains, would then th'row the switch 4 unto thebutton 7 which would cut. out the alarm circuit and out in the telephonecircuit when the engineers COLlltl talk with one anotglier and ascerain.the trouble and give direction fur further movement.

Tome accidents happen by $113 oparzzlwr in t-lm block house permit-hinga, brain to enter a block when he was aware of some danger ahead, forinstance, a destroyed bridge or washout. .l'. have provided a system in;ammecl'ion with the system carried by the H locomotive by'which theoperator can netify 35 the engineer of the train he has allowed u; enterthe block, to stop, when Lelephonic communication may be obbziii'mblsbel,wue1.\ the 0 stator and engineers. This is mumnplislm by anelectrical circuit or the hluflli each side OE flu: block house. 0:10 ofulwao syshems comprises the switch IOiouuLed in tlw block house andelectrically connected Will hlu-z rail 11. A wire 12 has a comedian 4will: the Holley wire 13 A bell 1495s elem 95 trim-Ely connect-ed with"the wire 12. A. double throw switch conv osed of the 1mm 15 and L6 isalsolocated in t e block Emu. V l'mth bu rs mimieutmi with the tales? mu174- A ltmcmn )5; is electrically connect-.93 with-she, 100 switch 10and the wiw 12 connects ill the! lm'r'wu li. Slwnld the oparzxtoriu Lhublock llUllbC iieisii'n umumunicatinn with gm gimmr in Lliu locomotiveuccupying ti-w block composed ol the rail 11 and trolley wire 13, lm:Llnnws the switch 10 onto the bullion 2O mmiwclml with the ball 14- :mdthrough it w ll Hm wire 12 WhlOlIGOIHwUlLB with l bs trolley wire. Thishas the ellect of closing: the. circuit through the instnimentsi inthelonumobiw, which will cause the be 1. 0f tha locomotive: and the lmll14 in the blank house t ie button and throws the (louhle r-Wilch ontothe bottom 18 uml H! which will rot in the telephone l7 and ll this timethivnuil .neerhuo llll in his telephone in; before ilescrihcil when uronversulion may he curricrl 1 on and the engineer WLLTIHItl oi the(longer ahead,

The bh-ch composed of the rail 21 uinl trollcy wire 22 for the otherside of the hloi-l' llnusu is similarly connected by the switch 23;,bell 24, wires 25 and 26, and buttons 27 lilhl 28, the former connectedwith the switch 23, and the latter with the wire 26. The switch 23closes the circuit through the hell 24, trolley wire 26 and rails 25through the apparatus located in the cab of the locouio Live, and thedouble switch moved onto ll'll' buttons 27 and 28 will enable thetelephonic communication as above described in conncction with the blockcomposing the rails 11 and trolley wire 13.

It has been made clear that there will he no occasion for a collisionbetween tmins un less the engineers disregard the ringing of the ell-muhell, and should the operator in the block house, for eny purpose desireto communicute with the engineer in the cab of the 30 lOlSUIIlUtlVl, ineither of the blocks controlled by him, hr can (lo 90.

l chum us my invention.

in on electric block signal system, mile, a liullvl) wire eirteiulingparallel thereto, and lll\lll(-ll into sections constituting blocks, 1L

slut ion ut the junction of two blocks, signaling instruments in saidstation, connected, one to the trolley wire section 01' each block,

t a telephone instrument also in said station,

moons for connecting said telephone instru' mentwith the trolle wiresection of either block as desired, an discomiecting the sig- Billinginstruments therefrom, and electrical apparatus carried by a train, andconnected no as to cooperate with that at the station.

In tcetii'nony whereof I have hereunto set my hand in presence of twosubscribing wit- UQSSBS.

EHARLES 11. SHAFFER.

Witnesses:

HENRY D. MAHER, JAMEfl M. HoY'r.

